Maybe there should be another category for the 55th Grammy Awards -- best "dis." Plenty were lobbed, and we're not talking about the Twittersphere -- these insults were hurled right from the stage. Here some of the most memorable moments some would probably prefer to forget.

The woman who has turned the boyfriend dis into an art form: Taylor Swift got the last word at her Grammy performance of "We Are Never Ever Getting Back Together." She mocked her One Direction ex, Harry Styles, by doing a fake British voice for the "guy" who is pleading to get back together with her. The music icon changed the lyrics to "So he calls me up and I'm like, 'I'm busy opening up the Grammys.'" Future boyfriends of Swift, you've been warned.

Chris Brown and Frank Ocean are still in a spat: The two took their differences all the way to the Staples Center. Ocean and Brown, both up for Best Urban Contemporary Album, are officially rivals. Ocean ended up winning the Grammy, and although he received a standing ovation for the award, there was one person in the audience who wouldn't stand, or even clap: Chris Brown.

Brown is beyond being a sore loser. The two allegedly fought outside Westlake Studios in Los Angeles on Jan. 27, with Ocean sustaining injuries but reportedly saying he would not press charges. After all, winning might be the best revenge.

Jay-Z couldn't resist: After accepting the award for Best Rap/Sung Collaboration ("No Church in the Wild") along with Frank Ocean, Kanye West and Terius "The-Dream" Nash, Beyonce's husband grabbed the mic and alluding to “The-Dream's" head wear, added, "I want to thank the swap meet for his hat." Ouch. The Dream's worst nightmare?

Katy Perry's insult was meant more to be a boost for new artists: Presenting the award for Best New Artist, she told those who lost not to worry. "I was never nominated for this, and I have my own eyelash line," she joked, adding, "Take that, Bon Iver." Late-breaking news: Bon Iver is looking into opening an eyelash line.

It wasn't so much what the hit band fun. had to say, but what it didn't: The winners picked up a Grammy for "We Are Young" featuring Janelle Monae. Although the three band members were on stage to accept the award, the featured singer, in the audience, did not join them. To add to the perceived insult, fun. failed to thank her, but instead thanked their parents and Lena Dunham, band member Jack Antonoff’s girlfriend.

Maybe CBS sent out the biggest insult of all: The network chose to ran Hilton Hotel commercials over the host, LL Cool J’s over-the-top performance at the end of the show. We guess CBS did the math and figured it was better to have LL in a huff rather than a sponsor.